Methods for broadcasting and receiving a scrambled multimedia programme, network head, terminal, receiver and security processor for these methods
US8086851B2 · kind B2 · utility
0Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2007 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Sep 7, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/601
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of broadcasting a scrambled multimedia program, by way of a broadcast network, in which before transmitting a license key; a network head carries out a step of authenticating a terminal, and if the terminal has successfully authenticated, the network heads sends the terminal a license transmission message containing the license key or cryptogram of the license key, by way of a point-to-point link, and if the terminal is not successfully authenticated, the network head acts (at 200) in such a way as to prevent the complete descrambling by this terminal of the scrambled multimedia program broadcast.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.